| Re: Bow tang repair causing rust staining down hull?
[Re: DennisMe]
#276225 11/13/14 09:51 AM 11/13/14 09:51 AM |
Joined: Jun 2009 Posts: 524 Petten Netherlands northsea junkie
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Posts: 524 Petten Netherlands | That could well be all there is to it! I have the same experience. With all the stainless bolts and plates of my hulls. I've sanded everything also in the idea of cleaning and finding good connecting with the epoxy where necessary. Like you used to do between layers laminate and glueing things on and with epoxy. Well, the rust gives the cat a sturdy used look.
ronald RAIDER-15 (homebuilt)
hey boy, what did you do over there, alone far out at sea?.. "huh....., that's the only place where I'm happy, sir.
| | | Re: Bow tang repair causing rust staining down hull?
[Re: northsea junkie]
#276226 11/13/14 10:25 AM 11/13/14 10:25 AM |
Joined: Jun 2001 Posts: 12,310 South Carolina Jake
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Posts: 12,310 South Carolina | Did you use any carbon fiber in your repair? It can cause stainless steel to rust.
Jake Kohl | | | Re: Bow tang repair causing rust staining down hull?
[Re: Jake]
#276228 11/13/14 11:38 AM 11/13/14 11:38 AM |
Joined: Jun 2009 Posts: 524 Petten Netherlands northsea junkie
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Posts: 524 Petten Netherlands | Jake, I cannot answer for Dennis, but I used, besides glass and kevlar, at least 2 layers of carbon for my hull skin-laminate. And on the places where bolts came through even double or triple. (My hulls are not hollow,but have a solid foamcore! So bolts are fixed and glued from inside)
So, your remark is spot on. I wondered already a few years ago where the rust came from. It looked like from inside, because painting it over with 2-C PU paint didn't help at all.
Last edited by northsea junkie; 11/13/14 01:30 PM.
ronald RAIDER-15 (homebuilt)
hey boy, what did you do over there, alone far out at sea?.. "huh....., that's the only place where I'm happy, sir.
| | | Re: Bow tang repair causing rust staining down hull?
[Re: northsea junkie]
#276233 11/13/14 04:29 PM 11/13/14 04:29 PM |
Joined: Jun 2001 Posts: 12,310 South Carolina Jake
Carpal Tunnel
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Carpal Tunnel
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Posts: 12,310 South Carolina | Jake, I cannot answer for Dennis, but I used, besides glass and kevlar, at least 2 layers of carbon for my hull skin-laminate. And on the places where bolts came through even double or triple. (My hulls are not hollow,but have a solid foamcore! So bolts are fixed and glued from inside)
So, your remark is spot on. I wondered already a few years ago where the rust came from. It looked like from inside, because painting it over with 2-C PU paint didn't help at all. Here's a quick reference on the Galvanic Material Series. Carbon Fiber (Graphite) is at the very bottom. http://www.corrosionpedia.com/2/140...ies-galvanic-compatibility-and-corrosion
Jake Kohl | | | Re: Bow tang repair causing rust staining down hull?
[Re: DennisMe]
#276240 11/14/14 10:12 AM 11/14/14 10:12 AM | MN3
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Unregistered | my next band will be named "Galvanic Corrosion and the Sacrificial Anode" or Gcatsa for short | | | Re: Bow tang repair causing rust staining down hull?
[Re: DennisMe]
#276286 11/18/14 08:59 AM 11/18/14 08:59 AM | MN3
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